XIX 
THE EXAMINATIONS AT WORK 
Installation: the examiner; the forms; the room; the procedure; the 
examiner as interviewer. Maintenance: modifications of procedure and 
standards. 
No research in vocational selection is complete which 
stops short at this point, ignoring responsibility for the in- 
stallation and maintenance of the new procedures. 
Having proved to the satisfaction of himself and the man- 
agement that the scientific method has disclosed certain 
ways of measuring abilities which are valid in selecting 
workers for the job in question and which promise an eco- 
nomic saving to the firm, it remains for the investigator to 
see that these methods are properly installed. He should 
also make sure that they are continued in operation either in 
their original form or with only such changes as are clearly 
demanded by changing employment conditions. He should 
see that changes are made only after application of the same 
rigorous scientific procedure which characterized the orig- 
inal study. Maintenance, as well as installation, is an indis- 
pensable stage of research in vocational selection. 
INSTALLATION 
The examiner. To administer application blanks, tests, 
and other examinations after they have once been developed 
is less of an undertaking than to carry out the original re- 
search. The investigator, to be free for other similar studies, 
will prefer to select and develop assistants to do this routine 
examining. An examiner should be a bright, accurate, tact- 
ful person, preferably with a background of experience in 
the plant and in the interviewing room, as well as a familiar- 
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